Explosive-engine.



N. O. ALLYN.

EXPLOSIVE ENGINE.

APPLIoATIon rlLnn nov.13, 1907.

Patented Apr. 11, 1911.

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N. u. ALLYN. EXPLOSIVE ENGINE.

APPLICATION FILED NOV. 13, 1907.

wPatented Apr.'1r1;`1911.

wi h1 aooeo NEWELL 0. ALLYN, OF WARREN, OHIO.

ExPLosIvE-ENGINE.

Specification of Letters Iatent.

Patented Apr. 11, 1911.

Application 1aed November 13, 1907. serial No. 401,985.

To all whom 'it may concern:

p dispense with the necessity4 of employing the lrotary explosiveelect-ric spark for igniting the charges of Aengines of the two-cycletype. s

According to my invention, the flame resulting from each explosion, ineach of several revolving cylinders, is utilized to effect theignitionof the charge of the next following cylinder. For this purpose theexplosion end or chambercf each of several revolving cylinders isconnected with the explosion endor chamber of the next followingcylinderso that as each charge is ready to be exploded a portion of the flame ofthe last previously-exploded charge will 'be utilized for that purpose,the passage of a portion of such flame being controlled automatically bymeans actuated by the pressure in each cylinder.

A further object is to prevent the non combustible gases of a previousexplosion from interfering with the passage of a arne portion from onecylinder to another; and a still further object is to utilize the heatof these non-combustible gases to prevent the chilling of theflame-portion in its passage from one cylinder to another.

The invent-ion will be hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a view partly in section, andpartly 1n side elevation, showing my present improvements. Fig. 2 isacentral transverse section at right angles to Fig. 1. Fi 3 is a,horizontal sectional view. throug one of the cylinders. Fi ..4 is adiagrammatic' view.

In this appication I have shown a twocycle rotary explosion engine ofthe type embraced by my application for patent vfiled March 6, 1905,Serial No. 248,619,

which engine comprises two pairsof pistons, a rotatable crank shaft tothe cranked portions of which the rods-of opposite pistons are secured,said pistons with their cylinders revolving with and around the crankshaft, which latter makes two revolutions to one revolution vof thecylinders and their casing. As pointed out in mysaid application, thecasing 1 is mounted on t-runnions 2 supported by a stationary frame 3;and the shaft 4 is mounted iu bearings 5 eccentrically located withinthe trunnions. This shaft has two cranks, to-each of which are securedthe inner ends of the rods 6 of opposite pistons, the pistons and rodsof the set 7 being set at right angles to the pistons and rods of theset 8.

The gas-mixture is introduced into the crank chamber of casing l througha supply pipe, the opening in which the latter is secured beingindicated at 9 in one ofthe trunnions. Each of the piston cylinders isclosed at its inner end and provided with a packing box 10 for itsrespective piston-rod. The gas mixture is drawn from the commoncrank-chamber into each of the several cylinders through a by-pass port12 which opens into such cylinder between its inner closed end and thepiston. The mixture is so drawn by the outward travel of the pistons,and as the latter travel inwardly, on the explosion strokes, they closethe outer ends of ports 12 and compress the charge in the inner orcompression ends of the cylinders. As'the pistons clear transfer ports13, opening into the cylinders at points farther out than 'the ports 12,they force the mixture from the inner or compression ends ofthecylinders through such transfer ports into the outer or explosion endsof the cylinders, the outer .ends of such 4ports 13 being fullyuncovered as the pistons reach the inner limits of travel. But prior toexposing the ends of the transfer ports, the pistons open up yexhaustports 14' for the escape of the burned gases. I have shown each pistonas formed with a detlector 15 for defiecting the gases as they enterfrom the transfer ports, and at 16 I have indicateddiagonally-positioned screens.

On each piston cylinder, near its outer end, is a valve-casing 17 whichcommunicates with its respective cylinder through outer anfl inner ports18 and 19, such ports opening on opposite sides of a piston 20V on therod 21 of a valve 22. This valve is normally heldto its seat bycentrifugal action and, in addition thereto, a sprln 22Il acting on thevalve-rod. The outlet si e of the valve casing 17 of each cyllndcr 1sconplosion of its mixture, it first opens the outer vport 18, permittingthe pressure of the exploded gases to act against the outer face of therespective valve-piston 20 and effect the unscating of such-valve, andas soon as the inner port 19 is opened a. portion o-f the flame willimmediately )ass through such inner poi-t and by the va ve 22 into theconnecting tube -toeffect the explosion of the compressed charge in thenext or succeeding cylinder. The escape into tube 23 is but momentary,since as soon as the pressure of the exploded charge 'is exerted againstthe inner face of Vthe valve-piston 20, (thereby equalizing the pressureon both sides thereof) the valve will be seatedby centrifugal forcecoupled with the action of the spring. The escape of the flame into theconnecting tube occurs as the next succeeding cylinder is in position tohave its charge exploded.

Each of the tubes 23 is inclosed throughout a major portion of itslength by a jacket or chamber 24C which is connected at one end by a`small tube 25 either with tube 23 or with -that portion of valve casing17 into which such tube 23 opens. After cach explosion, the respectiveflame tube 23 is filled with carbon dioxid gas, the result .of completecombustion, which f gas is driven, on the next compression stroke of thepiston, intoy the flame-entrance end of the tube, and through the smalltube 25 into the jacket 24. This leaves in each tube -only the freshmixture (forced thereinto by such compression stroke), and allows theflame from the last previously explodedcylinder to immediately reachsuch mixture upon the unseating of valve 22. Were vit not for thisadditional chamber or jacket the non-combustible gases would interferewith the ready passage of the flame, and delay the ignition of thecharge in the next succeeding cylinder. Furthermore, the heat of theburned gases within the jardets 24; serves to prevent the chilling ofthe flame portions in their passage fro'm one cylinder to another. Inconsequence of this feature each of the several `flame conveying tubesis kept free of all non-combustible gases, and an uninterrupted passageway is provided forthe flame portions.

Althbugh the ignition of the charge of each revolving cylinder iseffected by a portion of the flame of the last previouslyignited charge,yet it is essential that some means be employed for securing the initialignition. This may be accomplishedvin Various ways, and the particularmeans employed is immaterial. Preferably, as shownby the diagrammaticView, Fig. 4, each of the cylinders may be equipped with a sparker 26electrically connected, in any of the well-known ways, with a battery 27and *I a spark lcoil 2S so that in starting a spark may be generated inany one of the several cylinders.

I have not herein described the construction shownin the drawings forguidingthe inner ends of the pist-on rods as they travel in the crankcase, since the vmeans so shown ,y

dilers'but slightly from what is showmand described in my y before notedapplication for patent. v

It will be understood that I do not confine myself to any particularmeans for carrying out my invention, but I have shown and describedwhat- I believe to be preferable for accomplishing the purposes stated.v

I claim as my invention:

1. A rotary explosive-engine of the twocycle type comprising a pluralityof revolving cylinders, reciprocatlng pistonsl therein, I

a crank shaft to which the piston rods are secured, passagewaysconnecting the explosion ends. or chambers of the several cyliny dersfor admitting a portion of the flame created in each cylinder into thenext succeeding cylinder for igniting the charge thereof, and meansoperable within said pas-- sageways for automatically controlling thepassage of such flame portion from each cylinder, such latter meansbeing operated to open and close said passagewaysby the explosive forcein the cylinders.

2. A rotary explosive-engine of the twocycle type comprising a pluralityof revolving cylinders, reciprocating pistons therein, a crank shaft towhich the piston rods are secured, passageways connecting the explosionendsV or chambers f the several cylinders for admitting a ortion ofv theflame created in each cylinder intoy the next succeeding cylinder forigniting the charge thereof, meansl adjacent to each cylinder fornormally closing the passageway connecting the latter tothe nextsucceeding pyli/nder, and mea-ns for utilizing the explos1ve :force ineach cylinder for`frst opening said latter means and then kpermittingthe closing thereof. y 3. A rotary explosive-engine of the twocycle typecomprising a plurality vof revolving cylinders, reciprocating pistonstherein, a crank shaft to which the piston rods are secured, tubesconnecting the explosion ends or chambers 'pf the several cylinders,valves normallyclosing the entrances to said tubes, pistons carried bysaid valves, and means for permitting the pressure in each cylinder toact on said pistons to first unseat said valves and then to throwsaidpistons in balance to allow the valves to be seated.

la.i

therein, a crank shaft to which the piston rods are secu-red, tubesconnecting the explosion ends or chambers of the several cylinders,valves for normally closing the entrances to said tubes, springs forholdin said valves seated, pistons connected to sai valves, and portsleading from the explosion chamber of each cylinderl to opposite sidesof the valve pistons.

5. An explosive engine comprising a plurality of cylinders,reciprocating pistons therein, a crank shaft to which the pistons aresecured, means connecting the explosion ends 0r chambers of the severalcylinders for admitting a portion of the flame created in each cylinder`into another cylinder for igniting the charge thereof, and means`mountedupon said connecting means for receiving the non-combustiblegases.

6. An explosive engine comprising a plu,- rality of cylinders,reciprocating pistons therein, a crank shaft to which the pistons4 aresecured, tubes connecting the explosion ends Qr chambers of the severalcylinders for admitting a portion of the flame created in each cylinderinto another cylinder for igniting the charge thereof, and a chamber incommunication with each of said tubes for receiving the non-combustiblegases from such tubes. l

7. An explosive engine comprising a pluzrality of cylinders,reciprocating pistons therein, a crank shaft to which the pistons aresecured, tubes' connecting the explosion ends orchambers of the severalcylinders for admitting a portion of the flame created in each cylinderinto another cylinder for igniting the charge thereof, and a chamber incommunication with each Iofsaidtubes for ends or chambers ofthe severalcylindersfor admitting a portion of the` flame created'in each cylinderinto another cylinder for igniting the charge thereof, and jackets orchambers surrounding said tubes and in communicationy therew1th forreceiving non-combustible gases, the heat of such gases serving tomaintain the temperature of said tubes tol prevent the flafne portionsfrom being chilled.

9. A rotary explosive-engine comprising a plurality of revolvingcylinders, reciprocating pistons therein, a crank shaft to which thepiston rods are secured, tubes connecting the explosion end or chamberof each cylinder with the explosion endl or chamber ofthe next followingcylinder,'n,ieans for admitting into each o the flame created ineachcylinder for ignitf ing the charge in the next following 'cylinder,and chambers with which said tubes communicate for storing burned gasesforced into said tubes after each explosion.

Intestimony whereof, I have signed this specification in the ingwitnesses.

, NEWELL O. ALLYN. Witnesses:

GEORGE H. BnowN, MARY R. LYoNs.

said tubes a portion of 4 presence of two subscrib-`

